cifs: convert printk(LEVEL...) to pr_<level>

The useful macros embed message level in the name. Thus, it cleans up the code
a bit. In cases when it was plain printk() the conversion was done to info
level.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Steve French <steve.french@primarydata.com>

diff --cc fs/cifs/cifs_debug.c
Simple merge

diff --cc fs/cifs/cifs_debug.h
Simple merge

diff --cc fs/cifs/connect.c
Simple merge

diff --cc fs/cifs/transport.c
Simple merge